メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.82342924108 35.3888292197502, 136.823562294269 35.3895771074562, 136.823572819744 35.3896757257137, 136.823543207809 35.3897743013403, 136.822465214285 35.3905377895212, 136.821700935826 35.3908972357759, 136.821390635934 35.3909172700557, 136.820133388207 35.3909182014396, 136.820351432683 35.3902792650398, 136.820334710938 35.3899205661932, 136.820106015532 35.3893486648263, 136.819556902751 35.3874708182915, 136.82283045289 35.3868216776273, 136.823076236646 35.3876250217263, 136.82342924108 35.3888292197502)) ^^http://www.opengis.net/ont/geosparql#wktLiteral